A Beobloke blog - Beoblog?

[Shovel_Knight]

Ah - the ultimate audio cuckoo clock!

Shouldn't this title be reserved for the Fisher-Lincoln Model 70 changer?

[Barry]

Possibly:



https://www.youtube.com/watch?v=eTKrYBSHsWs



But it's more like something Heath Robinson would have concocted.

Being Swiss however, I think the Thorens TD224 is more deserving of the title 'cuckcoo clock'.

[Beobloke]

Tonight’s job - belt change on both decks of an Aiwa AD-WX727 double cassette deck.

I have to say - hats off to Aiwa for the design. Five screws to undo and each mechanism just lifts out.

Two screws to undo the motor and both belts are easily accessible. It was a pleasure of a job, and that’s a rare thing to say where cassette belts are concerned!

[Firebottle]

Always good when something has had thought put into ease of maintenance

[Lawrence001]

Yeah don't see much of that these days, they want you to chuck it.

[Beobloke]

Right, let “Loudspeaker Repair January” commence!

First up, the rubbing midrange driver of my B&O Beovox RL140s - interestingly, the cone appears to have been glued noticeably off-centre when it was manufactured from new. Replacements are about £50 when they crop up but that sounds too easy!

Step 1 - remove the foam gasket




Step 2 - with a good, sharp scalpel, cut off the dust cap.

[Beobloke]

Step 3 - separate the cone from the chassis



Step 4 - fit shims to re-centre the voice coil

[Beobloke]

Step 5 - give the chassis a clean, apply glue and stick the surround back down.

Step 6 - apply glue to the top of the surround and re-fit the gasket



Step 7 - apply a suitable weight to hold this all down and leave for 24 hours. As luck would have it, the outer platter of a Yamaha PF-800 turntable is the perfect size!



To be continued when it’s all dry…

[Beobloke]

Final step. Remove shims, re-fit dust cap, apply a bead of glue round it and leave to dry overnight.



Et voila! One midrange driver that no longer rubs.

[Firebottle]

Well done Adam.